import java.io.*;

public class Main {
    public static void main(String[] args)  {
        Reader r=null;
        try{
         r= new FileReader("foodinfo.txt");
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (r!=null){
        BufferedReader br=new BufferedReader(r);
        try{
            String line =br.readLine();
            System.out.println("食物，每100克铁元素含量（毫克）");
            double max=0.0;
            String maxName="";
            while ((line=br.readLine())!=null){
                String[] strs=line.split(",");
                //strs[0],strs[1],strs[2],strs[3]
                //strs[3]/strs[2]*100
                int weight =Integer.parseInt(strs[2]);
                double feWeight =Double.parseDouble(strs[3]);
                double feWeightPer100=feWeight/weight*100;
                if (feWeightPer100>max){
                    max=feWeightPer100;
                    maxName=strs[0];
                }
                System.out.println(strs[0]+","+feWeightPer100);
            }
            System.out.println("含量最高的食物是"+maxName+",铁元素含量"+max);
        }catch (IOException e){
            e.printStackTrace();
        }
        }
    }
}